Vibrating diaphragm and miniature sound production device
A film layer and foaming technology, applied in the direction of flat diaphragm, polymer material diaphragm, non-planar diaphragm/paper cone, etc., can solve the problems of high stereoregularity, poor temperature resistance, large diaphragm quality, etc. , to achieve the effect of excellent damping performance, excellent stability and good resilience
Pending Publication Date: 2021-10-22
GOERTEK INC
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- Abstract
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Problems solved by technology
For example, engineering plastics such as PEEK and PAR have good temperature resistance, but the material has poor resilience, and the product is prone to film folding, which cannot play a waterproof role.
Although the thermal stability and resilience of silicone rubber are good, but because of its symmetrical chemical structure, high tacticity, small steric hindrance of symmetrically substituted methyl groups, the modulus or hardness of silicone rubber is relatively low, resulting in the Low damping, resulting in greater distortion of products with silicone rubber diaphragms
The rubber-like diaphragm with high damping has a higher density, resulting in a larger mass of the diaphragm, resulting in a lower loudness of the diaphragm product.
It can be seen that the overall performance of the above-mentioned diaphragm is poor, and cannot meet the overall performance requirements of the miniature sounding device
Method used
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[0033] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
[0034] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.
[0035] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the description.
[0036] In all examples shown and discussed herein, any specific values should be construed as exemplary only, and not as limitations. Therefore, other instances of the exemplary embodiment may have dif...
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Abstract
The embodiment of the invention discloses a vibrating diaphragm and a miniature sound production device. The vibrating diaphragm comprises a foamed rubber diaphragm layer made of foamed rubber; wherein the foaming rubber is a foaming body prepared by a foaming method; the thickness of the foaming rubber film layer ranges from 10 micrometers to 300 micrometers. And the loss factor of the foamed rubber film layer is greater than 0.06. The foamed rubber has excellent damping performance, and can restrain polarization of the vibrating diaphragm in the vibration process. The vibrating diaphragm is good in comprehensive performance and can be applied to miniature sound production devices such as small horns and the like.
Description
technical field [0001] The present invention relates to the technical field of electroacoustic conversion, and more specifically, the present invention relates to a diaphragm and a miniature sound generating device. Background technique [0002] With the rapid development of electronic technology, electronic products are more and more widely used, especially miniaturized electronic products, such as mobile phones, IPADs, smart watches and other personal consumer electronics markets are becoming more and more popular. In the aforementioned miniaturized electronic products, miniature sound generating devices are indispensable. At present, the diaphragms used in micro-sounding devices are mostly made of multi-layer composite materials, such as engineering plastics such as PEEK, PAR, PEI, and PI, elastomer materials such as TPU and TPEE, and films such as acrylic film and silicone film. In addition, silicone rubber has good thermal stability, hydrophobicity and excellent resili...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H04R7/04H04R7/10H04R7/12H04R31/00B32B25/04B32B25/12B32B25/14B32B25/16B32B25/18B32B7/12
CPCH04R7/04H04R7/10H04R7/12H04R7/125H04R31/003B32B5/18B32B7/12H04R2307/025H04R2231/001B32B2266/0207B32B2307/72B32B2307/718B32B2307/51B32B25/04B32B25/12B32B25/14B32B25/16B32B25/18H04R31/00H04R7/02H04R7/00
Inventor 惠冰凌风光李春刘春发
Owner GOERTEK INC